\tracingonline=2
\tracingcommands=2
\tracingmacros=2
\tracingrestores=2

\catcode`{=1
\catcode`}=2

\global\par\par
\global\outer\long\relax\show\x\par

{
\outer\let\x=2
\show\x

\global\outer\let\x=3
\show\x

\let\y=4
\show\y

\global\let\y=5
\show\y

\outer\global\chardef\c1=3
\outer\global\countdef\c2=3

\outer\global\count0=77
\outer\global\dimen0=77pt
\outer\global\skip0=77pt
\outer\global\muskip0=77pt

\count1=2
\dimen1=2pt
\skip1=2pt
\muskip1=2pt

\outer\global\advance\count1by10
\outer\global\advance\dimen1by10pt
\outer\global\advance\skip1by10pt
\outer\global\advance\muskip1by10pt

\outer\global\parshape2 4pt 4pt 4pt 4pt
\outer\global\hyphenation{aa}
\outer\global\patterns{aa}
\outer\global\font\f=cmr10
\show\f
\outer\global\f
\show\f
\outer\global\hyphenchar\f=11
\showthe\hyphenchar\f

}

\show\x
\show\y
\show\c1
\show\c2

\showthe\count0
\showthe\dimen0
\showthe\skip0
\showthe\muskip0

\showthe\count1
\showthe\dimen1
\showthe\skip1
\showthe\muskip1

\show\parshape
\show\f
\showthe\font
\showthe\hyphenchar\f


\end
